<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>活跃用户推荐 - 社交平台</title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css" rel="stylesheet">
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
    <style>
        :root {
            --primary: #165DFF;
            --primary-light: #E8F3FF;
            --secondary: #36CFC9;
            --success: #52C41A;
            --warning: #FAAD14;
            --danger: #FF4D4F;
            --dark: #1D2129;
            --gray: #86909C;
            --light: #F2F3F5;
            --border: #E5E6EB;
            --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 6px 16px rgba(0, 0, 0, 0.1);
        }
        
        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            background-color: #F7F8FA;
            color: var(--dark);
            line-height: 1.6;
        }
        
        .container {
            max-width: 1200px;
        }
        
        /* 导航栏样式 */
        .navbar {
            background-color: white;
            box-shadow: var(--shadow);
            padding: 0.75rem 1rem;
        }
        
        .navbar-brand {
            font-weight: 700;
            color: var(--primary);
            font-size: 1.5rem;
        }
        
        .nav-link {
            color: var(--dark);
            margin-left: 1rem;
            font-weight: 500;
            transition: color 0.2s;
        }
        
        .nav-link:hover, .nav-link.active {
            color: var(--primary);
        }
        
        /* 主内容区 */
        .main-content {
            padding: 3rem 0;
        }
        
        /* 页面标题 */
        .page-header {
            text-align: center;
            margin-bottom: 3rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid var(--border);
        }
        
        .page-title {
            font-size: 2.25rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--dark);
        }
        
        .page-desc {
            color: var(--gray);
            max-width: 700px;
            margin: 0 auto;
        }
        
        /* 通用用户卡片样式 */
        .user-card {
            background-color: white;
            border-radius: 12px;
            box-shadow: var(--shadow);
            transition: transform 0.3s, box-shadow 0.3s;
            overflow: hidden;
        }
        
        .user-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        
        .user-info {
            padding: 1.25rem;
        }
        
        .user-name {
            font-weight: 600;
            font-size: 1.1rem;
            margin-bottom: 0.25rem;
        }
        
        .user-bio {
            font-size: 0.9rem;
            color: var(--gray);
            margin-bottom: 1rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        .user-stats {
            display: flex;
            gap: 1rem;
            margin-bottom: 1rem;
        }
        
        .user-stat {
            text-align: center;
            flex: 1;
        }
        
        .stat-value {
            font-weight: 600;
            color: var(--primary);
            font-size: 1rem;
        }
        
        .stat-label {
            font-size: 0.8rem;
            color: var(--gray);
        }
        
        .follow-btn {
            display: block;
            width: 100%;
            padding: 0.5rem;
            background-color: var(--primary);
            color: white;
            border: none;
            border-radius: 6px;
            font-weight: 500;
            transition: background-color 0.2s;
        }
        
        .follow-btn:hover {
            background-color: #0E42D2;
            color: white;
        }
        
        .follow-btn.following {
            background-color: var(--light);
            color: var(--dark);
        }
        
        .follow-btn.following:hover {
            background-color: var(--border);
        }
        
        /* 头像样式 */
        .avatar {
            position: relative;
            display: inline-block;
        }
        
        .avatar-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: inherit;
        }
        
        .avatar-placeholder {
            width: 100%;
            height: 100%;
            background-color: var(--primary-light);
            color: var(--primary);
            border-radius: inherit;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
        }
        
        /* 样式1: 网格布局用户卡片 */
        .users-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.5rem;
            margin-bottom: 4rem;
        }
        
        .grid-user-card .avatar {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            margin: -40px auto 0;
            border: 4px solid white;
            position: relative;
            z-index: 2;
        }
        
        .grid-user-card .card-header {
            height: 60px;
            background-color: var(--primary-light);
            position: relative;
        }
        
        .grid-user-card .user-info {
            text-align: center;
            padding-top: 2rem;
        }
        
        /* 样式2: 横向用户列表 */
        .horizontal-users {
            margin-bottom: 4rem;
        }
        
        .horizontal-list {
            display: flex;
            gap: 1.5rem;
            overflow-x: auto;
            padding-bottom: 1rem;
            scrollbar-width: thin;
        }
        
        .horizontal-list::-webkit-scrollbar {
            height: 6px;
        }
        
        .horizontal-list::-webkit-scrollbar-thumb {
            background-color: var(--gray);
            border-radius: 3px;
        }
        
        .horizontal-user-card {
            min-width: 200px;
            text-align: center;
        }
        
        .horizontal-user-card .avatar {
            width: 100px;
            height: 100px;
            border-radius: 50%;
            margin: 0 auto 1rem;
        }
        
        /* 样式3: 带多图展示的用户卡片 */
        .multi-image-users {
            margin-bottom: 4rem;
        }
        
        .multi-image-user-card {
            display: flex;
            margin-bottom: 1rem;
        }
        
        .multi-image-user-card:last-child {
            margin-bottom: 0;
        }
        
        .user-avatar-container {
            width: 100px;
            flex-shrink: 0;
            padding: 1rem;
            display: flex;
            flex-direction: column;
            align-items: center;
            border-right: 1px solid var(--border);
        }
        
        .multi-image-user-card .avatar {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            margin-bottom: 0.75rem;
        }
        
        .user-content {
            flex: 1;
            padding: 1rem;
        }
        
        .user-posts {
            display: flex;
            gap: 0.5rem;
            margin-top: 0.75rem;
            overflow-x: auto;
            padding-bottom: 0.5rem;
        }
        
        .user-post-img {
            width: 80px;
            height: 80px;
            border-radius: 6px;
            flex-shrink: 0;
            object-fit: cover;
        }
        
        /* 样式4: 简洁用户网格 */
        .simple-users-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
            gap: 1.5rem;
        }
        
        .simple-user-card {
            text-align: center;
            padding: 1rem;
        }
        
        .simple-user-card .avatar {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            margin: 0 auto 0.75rem;
        }
        
        .simple-user-card .user-name {
            margin-bottom: 0.5rem;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        
        .user-badge {
            font-size: 0.75rem;
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            background-color: var(--primary-light);
            color: var(--primary);
            display: inline-block;
            margin-bottom: 0.75rem;
        }
        
        /* 分类标题 */
        .section-header {
            margin-bottom: 1.5rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--primary-light);
            display: flex;
            align-items: center;
        }
        
        .section-icon {
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background-color: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 0.75rem;
            flex-shrink: 0;
        }
        
        .section-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 0;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .users-grid {
                grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            }
            
            .simple-users-grid {
                grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
            }
        }
        
        @media (max-width: 768px) {
            .page-title {
                font-size: 1.75rem;
            }
            
            .section-title {
                font-size: 1.25rem;
            }
            
            .multi-image-user-card {
                flex-direction: column;
            }
            
            .user-avatar-container {
                width: 100%;
                border-right: none;
                border-bottom: 1px solid var(--border);
                flex-direction: row;
                gap: 1rem;
                padding: 1rem;
            }
            
            .multi-image-user-card .avatar {
                margin-bottom: 0;
            }
        }
        
        @media (max-width: 576px) {
            .users-grid {
                grid-template-columns: 1fr;
            }
            
            .simple-users-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            
            .section-header {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .section-icon {
                margin-bottom: 0.5rem;
            }
        }
    </style>
</head>
<body>
    <!-- 导航栏 -->
    <nav class="navbar navbar-expand-lg">
        <div class="container">
            <a class="navbar-brand" href="#">社交平台</a>
            
            <div class="collapse navbar-collapse" id="navbarNav">
                <ul class="navbar-nav ms-auto">
                    <li class="nav-item">
                        <a class="nav-link" href="#"><i class="fas fa-home me-1"></i> 首页</a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link active" aria-current="page" href="#"><i class="fas fa-users me-1"></i> 社区</a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="#"><i class="fas fa-compass me-1"></i> 发现</a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="#"><i class="fas fa-link me-1"></i> 友情链接</a>
                    </li>
                    <li class="nav-item">
                        <a class="nav-link" href="#"><i class="far fa-user me-1"></i> 我的</a>
                    </li>
                </ul>
            </div>
        </div>
    </nav>
    
    <div class="container main-content">
        <!-- 页面标题 -->
        <div class="page-header">
            <h1 class="page-title">活跃用户推荐</h1>
            <p class="page-desc">发现社区中最活跃的用户，他们分享优质内容、积极参与讨论，是社区的核心力量。关注他们，获取更多精彩内容。</p>
        </div>
        
        <!-- 样式1: 网格布局用户卡片 -->
        <div class="users-section mb-5">
            <div class="section-header">
                <div class="section-icon">
                    <i class="fas fa-th-large"></i>
                </div>
                <h2 class="section-title">热门活跃用户</h2>
            </div>
            
            <div class="users-grid">
                <!-- 有头像的用户 -->
                <div class="user-card grid-user-card">
                    <div class="card-header"></div>
                    <div class="avatar">
                        <img src="https://picsum.photos/200/200?random=1" alt="张明的头像" class="avatar-img">
                    </div>
                    <div class="user-info">
                        <h3 class="user-name">张明 <span class="badge bg-primary">创作者</span></h3>
                        <p class="user-bio">热爱摄影和旅行，用镜头记录生活中的美好瞬间，分享旅途见闻和摄影技巧。</p>
                        <div class="user-stats">
                            <div class="user-stat">
                                <div class="stat-value">1.2k</div>
                                <div class="stat-label">关注</div>
                            </div>
                            <div class="user-stat">
                                <div class="stat-value">5.8k</div>
                                <div class="stat-label">粉丝</div>
                            </div>
                            <div class="user-stat">
                                <div class="stat-value">328</div>
                                <div class="stat-label">作品</div>
                            </div>
                        </div>
                        <button class="follow-btn">关注</button>
                    </div>
                </div>
                
                <!-- 无头像的用户 -->
                <div class="user-card grid-user-card">
                    <div class="card-header"></div>
                    <div class="avatar">
                        <div class="avatar-placeholder">李华</div>
                    </div>
                    <div class="user-info">
                        <h3 class="user-name">李华 <span class="badge bg-success">专家</span></h3>
                        <p class="user-bio">前端开发工程师，热衷于分享JavaScript和CSS的进阶技巧，定期发布技术教程。</p>
                        <div class="user-stats">
                            <div class="user-stat">
                                <div class="stat-value">890</div>
                                <div class="stat-label">关注</div>
                            </div>
                            <div class="user-stat">
                                <div class="stat-value">12.5k</div>
                                <div class="stat-label">粉丝</div>
                            </div>
                            <div class="user-stat">
                                <div class="stat-value">86</div>
                                <div class="stat-label">作品</div>
                            </div>
                        </div>
                        <button class="follow-btn following">已关注</button>
                    </div>
                </div>
                
                <!-- 有头像的用户 -->
                <div class="user-card grid-user-card">
                    <div class="card-header"></div>
                    <div class="avatar">
                        <img src="https://picsum.photos/200/200?random=3" alt="王芳的头像" class="avatar-img">
                    </div>
                    <div class="user-info">
                        <h3 class="user-name">王芳 <span class="badge bg-warning">达人</span></h3>
                        <p class="user-bio">美食爱好者，擅长烘焙和家常菜，分享简单易学的食谱和烹饪心得。</p>
                        <div class="user-stats">
                            <div class="user-stat">
                                <div class="stat-value">540</div>
                                <div class="stat-label">关注</div>
                            </div>
                            <div class="user-stat">
                                <div class="stat-value">8.3k</div>
                                <div class="stat-label">粉丝</div>
                            </div>
                            <div class="user-stat">
                                <div class="stat-value">156</div>
                                <div class="stat-label">作品</div>
                            </div>
                        </div>
                        <button class="follow-btn">关注</button>
                    </div>
                </div>
                
                <!-- 无头像的用户 -->
                <div class="user-card grid-user-card">
                    <div class="card-header"></div>
                    <div class="avatar">
                        <div class="avatar-placeholder">赵伟</div>
                    </div>
                    <div class="user-info">
                        <h3 class="user-name">赵伟 <span class="badge bg-danger">博主</span></h3>
                        <p class="user-bio">科技产品测评师，专注于数码产品和智能设备的深度评测，提供专业购买建议。</p>
                        <div class="user-stats">
                            <div class="user-stat">
                                <div class="stat-value">320</div>
                                <div class="stat-label">关注</div>
                            </div>
                            <div class="user-stat">
                                <div class="stat-value">6.7k</div>
                                <div class="stat-label">粉丝</div>
                            </div>
                            <div class="user-stat">
                                <div class="stat-value">94</div>
                                <div class="stat-label">作品</div>
                            </div>
                        </div>
                        <button class="follow-btn">关注</button>
                    </div>
                </div>
            </div>
        </div>
        
        <!-- 样式2: 横向用户列表 -->
        <div class="users-section mb-5">
            <div class="section-header">
                <div class="section-icon">
                    <i class="fas fa-stream"></i>
                </div>
                <h2 class="section-title">新加入活跃用户</h2>
            </div>
            
            <div class="horizontal-list">
                <!-- 有头像的用户 -->
                <div class="user-card horizontal-user-card">
                    <div class="avatar">
                        <img src="https://picsum.photos/200/200?random=10" alt="陈静的头像" class="avatar-img">
                    </div>
                    <div class="user-info">
                        <h3 class="user-name">陈静</h3>
                        <p class="user-bio">插画师，喜欢创作治愈系插画作品</p>
                        <button class="follow-btn">关注</button>
                    </div>
                </div>
                
                <!-- 无头像的用户 -->
                <div class="user-card horizontal-user-card">
                    <div class="avatar">
                        <div class="avatar-placeholder">刘强</div>
                    </div>
                    <div class="user-info">
                        <h3 class="user-name">刘强</h3>
                        <p class="user-bio">健身教练，分享科学健身知识</p>
                        <button class="follow-btn">关注</button>
                    </div>
                </div>
                
                <!-- 有头像的用户 -->
                <div class="user-card horizontal-user-card">
                    <div class="avatar">
                        <img src="https://picsum.photos/200/200?random=12" alt="赵敏的头像" class="avatar-img">
                    </div>
                    <div class="user-info">
                        <h3 class="user-name">赵敏</h3>
                        <p class="user-bio">读书爱好者，分享读书笔记和推荐</p>
                        <button class="follow-btn following">已关注</button>
                    </div>
                </div>
                
                <!-- 有头像的用户 -->
                <div class="user-card horizontal-user-card">
                    <div class="avatar">
                        <img src="https://picsum.photos/200/200?random=13" alt="孙亮的头像" class="avatar-img">
                    </div>
                    <div class="user-info">
                        <h3 class="user-name">孙亮</h3>
                        <p class="user-bio">独立音乐人，分享原创音乐作品</p>
                        <button class="follow-btn">关注</button>
                    </div>
                </div>
                
                <!-- 无头像的用户 -->
                <div class="user-card horizontal-user-card">
                    <div class="avatar">
                        <div class="avatar-placeholder">周琳</div>
                    </div>
                    <div class="user-info">
                        <h3 class="user-name">周琳</h3>
                        <p class="user-bio">旅行博主，探索小众旅行目的地</p>
                        <button class="follow-btn">关注</button>
                    </div>
                </div>
                
                <!-- 有头像的用户 -->
                <div class="user-card horizontal-user-card">
                    <div class="avatar">
                        <img src="https://picsum.photos/200/200?random=15" alt="吴杰的头像" class="avatar-img">
                    </div>
                    <div class="user-info">
                        <h3 class="user-name">吴杰</h3>
                        <p class="user-bio">游戏开发者，分享开发经验和见解</p>
                        <button class="follow-btn">关注</button>
                    </div>
                </div>
            </div>
        </div>
        
        <!-- 样式3: 带多图展示的用户卡片 -->
        <div class="users-section mb-5">
            <div class="section-header">
                <div class="section-icon">
                    <i class="fas fa-images"></i>
                </div>
                <h2 class="section-title">内容创作达人</h2>
            </div>
            
            <div class="user-card">
                <!-- 用户1: 有多张图片 -->
                <div class="multi-image-user-card">
                    <div class="user-avatar-container">
                        <div class="avatar">
                            <img src="https://picsum.photos/200/200?random=20" alt="郑婷的头像" class="avatar-img">
                        </div>
                        <button class="follow-btn">关注</button>
                    </div>
                    <div class="user-content">
                        <h3 class="user-name">郑婷 <span class="badge bg-primary">旅行达人</span></h3>
                        <p class="user-bio">环球旅行家，已走过30多个国家，擅长发现小众景点和当地文化体验，每周更新旅行攻略和故事。</p>
                        <div class="user-stats">
                            <div class="user-stat">
                                <div class="stat-value">2.4k</div>
                                <div class="stat-label">关注</div>
                            </div>
                            <div class="user-stat">
                                <div class="stat-value">28.7k</div>
                                <div class="stat-label">粉丝</div>
                            </div>
                            <div class="user-stat">
                                <div class="stat-value">426</div>
                                <div class="stat-label">作品</div>
                            </div>
                        </div>
                        <div class="user-posts">
                            <img src="https://picsum.photos/200/200?random=21" alt="郑婷的旅行照片1" class="user-post-img">
                            <img src="https://picsum.photos/200/200?random=22" alt="郑婷的旅行照片2" class="user-post-img">
                            <img src="https://picsum.photos/200/200?random=23" alt="郑婷的旅行照片3" class="user-post-img">
                            <img src="https://picsum.photos/200/200?random=24" alt="郑婷的旅行照片4" class="user-post-img">
                            <img src="https://picsum.photos/200/200?random=25" alt="郑婷的旅行照片5" class="user-post-img">
                        </div>
                    </div>
                </div>
                
                <!-- 用户2: 无头像，有多张图片 -->
                <div class="multi-image-user-card">
                    <div class="user-avatar-container">
                        <div class="avatar">
                            <div class="avatar-placeholder">林浩</div>
                        </div>
                        <button class="follow-btn following">已关注</button>
                    </div>
                    <div class="user-content">
                        <h3 class="user-name">林浩 <span class="badge bg-success">摄影大师</span></h3>
                        <p class="user-bio">自然风光摄影师，专注于山川湖海等自然景观的拍摄，作品曾获多项摄影奖项，分享摄影技巧和后期处理方法。</p>
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                                <div class="stat-value">850</div>
                                <div class="stat-label">关注</div>
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                                <div class="stat-value">15.3k</div>
                                <div class="stat-label">粉丝</div>
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                            <div class="user-stat">
                                <div class="stat-value">278</div>
                                <div class="stat-label">作品</div>
                            </div>
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                    <h3 class="user-name">刘芳</h3>
                    <span class="user-badge">美食家</span>
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                        <img src="https://picsum.photos/200/200?random=37" alt="郑华的头像" class="avatar-img">
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